1 files changed, 75 insertions, 1 deletions
diff --git a/common.mak b/common.mak
index a1d9d1e502..dc4133a9da 100644
--- a/common.mak
+++ b/common.mak
@@ -5,6 +5,80 @@
 # first so "all" becomes default target
 all: all-yes
 
+ifndef SUBDIR
+
+ifndef V
+Q      = @
+ECHO   = printf "$(1)\t%s\n" $(2)
+BRIEF  = CC CXX HOSTCC HOSTLD AS YASM AR LD STRIP CP
+SILENT = DEPCC DEPHOSTCC DEPAS DEPYASM RANLIB RM
+
+MSG    = $@
+M      = @$(call ECHO,$(TAG),$@);
+$(foreach VAR,$(BRIEF), \
+    $(eval override $(VAR) = @$$(call ECHO,$(VAR),$$(MSG)); $($(VAR))))
+$(foreach VAR,$(SILENT),$(eval override $(VAR) = @$($(VAR))))
+$(eval INSTALL = @$(call ECHO,INSTALL,$$(^:$(SRC_DIR)/%=%)); $(INSTALL))
+endif
+
+ALLFFLIBS = avcodec avdevice avfilter avformat avresample avutil postproc swscale swresample
+
+# NASM requires -I path terminated with /
+IFLAGS     := -I. -I$(SRC_PATH)/
+CPPFLAGS   := $(IFLAGS) $(CPPFLAGS)
+CFLAGS     += $(ECFLAGS)
+CCFLAGS     = $(CPPFLAGS) $(CFLAGS)
+ASFLAGS    := $(CPPFLAGS) $(ASFLAGS)
+CXXFLAGS   += $(CPPFLAGS) $(CFLAGS)
+YASMFLAGS  += $(IFLAGS:%=%/) -Pconfig.asm
+
+HOSTCCFLAGS = $(IFLAGS) $(HOSTCPPFLAGS) $(HOSTCFLAGS)
+LDFLAGS    := $(ALLFFLIBS:%=$(LD_PATH)lib%) $(LDFLAGS)
+
+define COMPILE
+       $(call $(1)DEP,$(1))
+       $($(1)) $($(1)FLAGS) $($(1)_DEPFLAGS) $($(1)_C) $($(1)_O) $<
+endef
+
+COMPILE_C = $(call COMPILE,CC)
+COMPILE_CXX = $(call COMPILE,CXX)
+COMPILE_S = $(call COMPILE,AS)
+
+%.o: %.c
+	$(COMPILE_C)
+
+%.o: %.cpp
+	$(COMPILE_CXX)
+
+%.s: %.c
+	$(CC) $(CPPFLAGS) $(CFLAGS) -S -o $@ $<
+
+%.o: %.S
+	$(COMPILE_S)
+
+%.i: %.c
+	$(CC) $(CCFLAGS) $(CC_E) $<
+
+%.h.c:
+	$(Q)echo '#include "$*.h"' >$@
+
+%.ver: %.v
+	$(Q)sed 's/$$MAJOR/$($(basename $(@F))_VERSION_MAJOR)/' $^ > $@
+
+%.c %.h: TAG = GEN
+
+# Dummy rule to stop make trying to rebuild removed or renamed headers
+%.h:
+	@:
+
+# Disable suffix rules.  Most of the builtin rules are suffix rules,
+# so this saves some time on slow systems.
+.SUFFIXES:
+
+# Do not delete intermediate files from chains of implicit rules
+$(OBJS):
+endif
+
 include $(SRC_PATH)/arch.mak
 
 OBJS      += $(OBJS-yes)
@@ -51,7 +125,7 @@ $(TOOLOBJS): | tools
 
 OBJDIRS := $(OBJDIRS) $(dir $(OBJS) $(HOBJS) $(HOSTOBJS) $(TESTOBJS))
 
-CLEANSUFFIXES     = *.d *.o *~ *.h.c *.map *.ver *.gcno *.gcda
+CLEANSUFFIXES     = *.d *.o *~ *.h.c *.map *.ver *.ho *.gcno *.gcda
 DISTCLEANSUFFIXES = *.pc
 LIBSUFFIXES       = *.a *.lib *.so *.so.* *.dylib *.dll *.def *.dll.a